20164511631212 has 24 divisors (see below), whose sum is σ = 38378609733072. Its totient is φ = 9214552152000.

The previous prime is 20164511631211. The next prime is 20164511631239. The reversal of 20164511631212 is 21213611546102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20164511631211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1919693114 + ... + 1919703617.

It is an arithmetic number, because the mean of its divisors is an integer number (1599108738878).

Almost surely, 2^{20164511631212} is an apocalyptic number.

It is an amenable number.

20164511631212 is a deficient number, since it is larger than the sum of its proper divisors (18214098101860).

20164511631212 is a wasteful number, since it uses less digits than its factorization.

20164511631212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3839396849 (or 3839396847 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 20164511631212 in words is "twenty trillion, one hundred sixty-four billion, five hundred eleven million, six hundred thirty-one thousand, two hundred twelve".